Does the job, but not nicely

If I upload 10 images to a product, but do not add them to the gallery, or anywhere else in the post, these still show in the slideshow – not ideal as I sometimes upload masses of photos on a product for use elsewhere later.
Out of the box styling needs modifying to display nicely.
It’s a good idea, but needs to be refined to inherit styles from the theme. I’d rather run without it at this stage.